Specifications: Bluetooth version: V4.1+EDR Bluetooth agreement:A2DP/HFP/HSP/AVRCP Battery: 45mAh Working time: 3-4 hours Charging time: about 1.5 hour Distance: 10 meters Diameter of speaker: 10mm Whether single or double ear: just for one ear. Color: Gold and black. Compatibility: all smartphones, laptops, tablet PC with bluetooth .Note: When you receive this package and use the Earphone at the first time, the working time may not be very long, because we test them before sending them out, That costs some battery. Please don't worry. Charge them and they will work as expected.

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* The prices and shipping costs may have changed since the last update. It is technically not possible to update the prices in real time. The time of purchase on the Website of the seller is used as the reference.